For intrinsically safe circuits (ignition protection type i - intrinsic safety) according to IEC 60079-14:2013 / EN 60079-14:2014 /0165-1:2014, section 16.2.2, space-saving due to small cable diameter, can be used outdoors, fine-wire strand made of bare copper wires, PVC core insulation LAPP P8/1, jacket: PVC, sky blue similar to RAL 5015, cores twisted in layers, based on EN 50525-2-51, flame-retardant according to IEC 60332-1-2, UV and weather-resistant according to ISO 4892-2,